i say it is 20
There are 20 floors.
It has 4678 floors.
30 floors
Crystal Cave has 12 floors in Pokemon Mystery Dungeon: Explorers of Darkness.
The Nightmare has 17 floors.
there are no floors, just one, you can only evolve pokemon there
there are no floors........Uhhh.....There are 50 floors. :))
=20 Floors=
Bottomless Sea has 50 floors.
theres 19 floors and ovcourse the summit
48 floors
20 floors